EP2621669B1 - Modular structure for supporting blanks - Google Patents

Modular structure for supporting blanks Download PDF

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Publication number
EP2621669B1
EP2621669B1 EP10795063.6A EP10795063A EP2621669B1 EP 2621669 B1 EP2621669 B1 EP 2621669B1 EP 10795063 A EP10795063 A EP 10795063A EP 2621669 B1 EP2621669 B1 EP 2621669B1
Authority
EP
European Patent Office
Prior art keywords
pin
modular structure
blank
cavity
jaws
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10795063.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2621669A1 (en
Inventor
Almerino Canuto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FCS System SRL
Original Assignee
FCS System SRL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FCS System SRL filed Critical FCS System SRL
Publication of EP2621669A1 publication Critical patent/EP2621669A1/en
Application granted granted Critical
Publication of EP2621669B1 publication Critical patent/EP2621669B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/10—Auxiliary devices, e.g. bolsters, extension members
    • B23Q3/105—Auxiliary supporting devices independent of the machine tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/10—Auxiliary devices, e.g. bolsters, extension members
    • B23Q3/103—Constructional elements used for constructing work holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/10—Auxiliary devices, e.g. bolsters, extension members

Definitions

  • the present invention relates to a modular structure, particularly for supporting blanks, according to the preamble of claim 1, as for example known from EP1346794 .
  • Job-Shop practically represents the stereotype of the production method which is the exact opposite of that which characterises mass production.
  • Mass production consists in the manufacture of a small quantity of different types of product, each of which is however reproduced on a large scale in huge quantities, which can vary between the thousands or even millions of batches.
  • Such devices of the known type are indispensable whenever the stable locking in place is required of an object to be worked on, by means of generic operations which are also simple, not necessarily concerning a purely industrial environment.
  • the devices of known type are usually constituted by a pair of vertical spacer elements, the height of which and the relative distance of which can be varied as a function of the dimensions and of the shape of the piece to be locked in place.
  • Such spacer elements have, in an upper region, means of interconnection for a pair of substantially horizontal supports or arms, arranged in mirror-symmetry with respect to each other and brought into engagement with the piece to be locked in place at the lower surfaces thereof.
  • Each support has, substantially centrally, a hole that is adapted to permit the passage of a vertical rod, which is substantially parallel to the corresponding spacer element, and is coupled underneath to the work bench of the machine tool.
  • Such rod has in an upper region a threaded end which protrudes from the support, so as to permit the removable interconnection of means adapted to the temporary fixing of such rod, such as, for example, counter-threaded nuts.
  • the piece to be worked on which usually has a substantially squared shape, can then be preliminarily interposed between the pair of supports arranged mirror-symmetrically with respect to each other.
  • the operation to lock the piece in place is then performed by means of the contact under pressure expressed between an end portion of the lower surface of the supports and two opposite ends of the upper surface of such piece.
  • a further aggravating circumstance of the above mentioned problem consists in the fact that, when the piece is locked in place, it has at least three surfaces upon which no work can be performed, the third surface, in addition to the lateral surfaces adjacent to the locking elements, being the lower surface, which is resting entirely on the workbench of the machine tool.
  • a further drawback which often occurs in such locking devices of the known type, consists in the possible damaging of the piece owing to localised deformation, at the surfaces which have already been worked on and are subsequently subjected to contact with the supports, in order to permit the operator to work on any surfaces of the piece that have not yet been worked on.
  • a significant problem in addition to the problems already cited, refers to the considerable expenditure of time caused by repeated successive releasing, repositioning and re-locking operations on the piece which is destined for any form of processing on more than one surface.
  • a fixing system which can be interposed between the blank to be worked on and a work plate fixed to the reference system of the machine with which to carry out the work, which substantially comprises a plurality of fixing elements which are constituted by two opposing portions each provided with jaws which are adapted to engage, respectively, with two threaded pins which can be screwed in respective threaded holes which are formed both on the work plate and on the blank.
  • a variation of the above mentioned system which consists in the fact that it comprises a device for gripping the blank in place of the threaded pin which can be associated with the blank and, more precisely, in the hole in which one of the threaded pins would be screwed.
  • the aim of the present invention is to solve the above mentioned problems, eliminating the drawbacks in the cited background art, by providing a modular structure, particularly for supporting blanks, which makes it possible to position the pieces and stably lock them in place on the platform of any machine tool, in order to achieve the desired processing.
  • an object of the invention is to devise a supporting structure that makes it possible to simultaneously work on the greatest possible number of surfaces of the piece, by operating on at least five distinct axes that are perpendicular to each other.
  • This contrivance is aimed at achieving a reduction, even drastic, in the number of operations to reposition and re-lock in place that is necessary in order to complete the intended processing operations.
  • Another object of the invention is to obtain a supporting structure which is capable of ensuring an optimal precision of centring of the blank, and which thus also allows the repeatability of this same centring operation in the event of further work carried out later.
  • Another object of the invention is to devise a supporting structure which allows a utilisation that is quite secure and easy even by labour that does not have special qualifications.
  • Another object of the invention consists in obtaining a supporting structure that has a substantially flexible employment, and which can be easily adapted even to pieces of weights, dimensions and shapes that are noticeably different.
  • Another object of the invention is to obtain a supporting structure which makes it possible to rapidly carry out the preliminary operations to lock the piece in place, in order to reduce production costs.
  • Another object of the invention is to obtain a supporting structure which combines the above mentioned characteristics with that of having low implementation costs, said structure being implementable with the usual and known machines and systems.
  • a modular structure particularly for supporting blanks, which comprises at least one flat work plate which has a plurality of seats which can be integrally and removably associated with at least one portion of a blank to be worked on by way of fixing means
  • said fixing means comprising at least one fixing element which can be interposed between said plate and said blank and having at least one upper portion which can be faced towards at least one among said plate and said blank and which is provided with at least one first pin which can be associated, respectively, with one of said seats or with said portion, and can be inserted along its axis in a first cavity defined by said upper portion through a first circular hole defined on the surface of said upper portion which can be faced in the direction, respectively, of said plate or of said blank for the radial locking in place of said first pin relative to said upper portion, said first cavity accommodating a pair of first jaws which can be engaged with said first pin for its axial locking in place relative to said upper portion, characterised in that said fixing element has at least
  • a modular structure is particularly adapted to achieve the supporting of a blank, indicated in the figures with the reference numeral 50, or more generally of any piece to be worked on and/or assembled.
  • the modular structure 1 comprises at least one plate 2, which is substantially flat and which can be associated underneath, by way of interconnection means of known type, with a work bench, which is not shown.
  • such work bench can be for example the bench of a machine tool or it can be the work bench of another machine for the processing, assembly or painting of blanks.
  • the plate 2 which forms a shape that is preferably rectangular in plan, has on its upper surface a net of seats 3, advantageously arranged according to a modular net configuration or rectangular mesh configuration.
  • Each of the seats 3 comprises a compartment 4, below which a dead hole 5 is coaxially obtained, such hole being internally threaded and having a diameter which is advantageously smaller than that of the compartment 4.
  • the compartment 4 is adapted to act as the stable accommodation of a first portion 6a of a first centring bush, designated in the figures by the reference numeral 6, advantageously shaped like a circular ring.
  • the first bush 6 has a second upper portion 6b, which has an outer perimetric surface that is substantially frustoconical in shape. This portion 6b protrudes above from the plate 2 once the interconnection between the seat 3 and the first bush 6 has been effected.
  • the seats 3 of the plate 2 can be integrally and removably associated with at least one portion 7, provided with threaded holes 8, of the blank 50 to be worked on by way of fixing means 9.
  • the fixing means 9 comprise fixing elements 10 and 11 which can be interposed between the plate 2 and the blank 50 and which each have at least one upper part 10a or 11 a which can be faced towards at least one among the plate 2 and the blank 50 and at least one lower portion 10b or 11b which can be faced towards the other among the plate 2 and the blank 50.
  • each upper portion 10a or 11 a is faced towards the blank 50 and the lower portion 10b or 11b is faced towards the plate 2.
  • each upper part 10a and 11 a of each fixing element 10 and 11 is provided with at least one first pin 12 which can be associated, respectively, with one of the seats 3 or with the portion 7 of the blank 50.
  • the first pin 12 can be inserted along its axis 12a into a first cavity 13 which is defined by the upper portion 10a or 11a through a first circular hole 14 defined on the surface of the upper portion 10a or 11a which can be faced in the direction of the plate 2 for the radial locking in place of the first pin 12 relative to the upper portion 10a or 11a.
  • centring bush 15 which is accommodated in the first hole 14 and in which the first pin 12 can be inserted.
  • first jaws 16 which can be engaged with the first pin 12 for its axial locking in place relative to the upper portion 10a or 11 a and which comprises two first cylinders 17 which can be locked in place by means of grub screws 52 and which can be made to mutually approach each other by means of a first screw 18 which is inserted in a first through hole 19 which is defined by one of the first cylinders 17 and which can be screwed into a first threaded hole 20 which is defined by the other of the first cylinders 17.
  • the first cavity 13 has a substantially cylindrical shape with a circular base
  • the first cylinders 17 of the first jaws 16 also have a substantially cylindrical shape with a circular base.
  • the first pin 12 comprises a first end portion 12b which is substantially U-shaped so as to define a first passage 21 of the first screw 18.
  • first grip surfaces 22 are provided which consist for example of toothed profiles.
  • the first pin 12 comprises a second threaded end portion 12c which can be engaged with the threaded holes 8 of the portion 7 of the blank 50.
  • the lower portion 10b is entirely similar to the upper portion 10a. Indeed the lower portion 10b has the same elements as the upper portion 10a, which for the sake of brevity will not be described, and will be indicated with the same reference numerals as those used to describe the elements of the upper portion 10a.
  • the upper portion 10a and the lower portion 10b are mirror-symmetrical with each other with the two respective first pins 12 being coaxial between them.
  • the fixing element 11 shown in detail in Figure 4 has at least a lower portion 11b which can be faced towards the plate 2 and which is provided with at least one second pin 23 which can be engaged with one of the seats 3.
  • the second pin 23 can be inserted along its axis 23a into a second cavity 24 which is defined by the lower portion 11b through a second hole 25 with a substantially elongated shape along a predefined direction 26 which is substantially perpendicular with respect to the axis 23a of the second pin 23.
  • the second hole 25 has a shape that is substantially ovoid with two opposing sides that are rectilinear and parallel with respect to the predefined direction 26 and it is defined on the surface of the lower portion 11b which can be faced in the direction of the plate 2 in order to lock in place the second pin 23 relative to the lower portion 11b along a direction that is radial with respect to the second pin 23 and which is substantially perpendicular to the predefined direction 26.
  • the second cavity 24 which also has a shape that is substantially cylindrical with a circular base which runs in the lower portion 11b according to a direction that is substantially parallel to the predefined direction 26 and which is substantially perpendicular with respect to the lengthwise direction of the first cavity 13, accommodates a pair of second jaws 27 which can be engaged with the second pin 23 for its axial locking in place relative to the lower portion 11b and which are movable in the second cavity 24 along a direction that is substantially parallel to the predefined direction 26.
  • the second jaws 27 comprise two second cylinders 28 which also have a shape that is substantially cylindrical with a circular base, which can be locked in place by means of grub screws 52 and which can be made to mutually approach each other by means of a second screw 29 which is inserted in a second through hole 30 which is defined by one of the second cylinders 28 and which can be screwed into a second threaded hole 31 which is defined by the other of the second cylinders 28.
  • the second pin 23 also comprises a third end portion 23b which is substantially U-shaped so as to form a second passage 32 of the second screw 29.
  • second grip surfaces 33 are provided which consist for example of toothed profiles.
  • the second pin 23 comprises a fourth threaded end portion 23c which can be engaged in one of the seats 3 of the plate 2 which are also threaded.
  • fixing elements 10 can be employed like the one shown in Figure 3 .
  • first pins 12 are screwed into the respective threaded holes 8 and into the respective seats 3 with the first end portions 12b coupled by means of the first jaws 16 in the respective upper portions 10a and lower portions 10b.
  • fixing elements 11 can be employed like the one shown in Figure 4 .
  • first pins 12 and the second pins 23 are screwed, respectively, into the respective threaded holes 8 and into the respective seats 3 with the first end portions 12b and the third end portions 23b coupled by means, respectively, of the first jaws 16 and of the second jaws 27 in the respective upper portions 11a and lower portions 11b.
  • the eccentricity between the generic threaded hole 8 and the respective seat 3 is recovered thanks to the mobility conceded to the second pin 23 along the predefined direction 26.
  • spacer means 34 are provided which are constituted by one or more spacer elements 35 which can be fitted over a third pin 36 in place of the first pin 12.
  • the third pin 36 has a length which is adapted to connect the portion 52 or 53 of the blank 51 with the fixing element 10 or 11 and it comprises a first end portion 36a which is substantially U-shaped and which can be engaged with the upper portion 10a or 11 a, and a second end portion 36b, formed for example by a threaded shank, which can be engaged with the portion 52 or 53 of the blank 51.
  • the spacer elements 35 which consist for example of perforated disks, are then fitted over the third pin 36 in such number as to form a stack and remain interposed and resting between the upper portion 10a or 11a of the fixing element 10 or 11 and the portion 52 or 53 of the blank 51.
  • the invention has achieved the intended aim and objects, a modular structure for supporting blanks having been devised which makes it possible to position them and stably lock them in place in order to perform a pre-established process and/or operation, while at the same time ensuring the achievement of an optimal centring thereof, even by operators who are not experienced.
  • This is possible even with blanks which are geometrically complex, the alignment of which is guaranteed by the non-adjustable fixing elements and the stability of which is guaranteed by the adjustable fixing elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Jigs For Machine Tools (AREA)
  • Insertion Pins And Rivets (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
EP10795063.6A 2010-09-30 2010-09-30 Modular structure for supporting blanks Active EP2621669B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2010/000412 WO2012042546A1 (en) 2010-09-30 2010-09-30 Modular structure for supporting blanks

Publications (2)

Publication Number Publication Date
EP2621669A1 EP2621669A1 (en) 2013-08-07
EP2621669B1 true EP2621669B1 (en) 2014-07-16

Family

ID=43940841

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10795063.6A Active EP2621669B1 (en) 2010-09-30 2010-09-30 Modular structure for supporting blanks

Country Status (11)

Country Link
US (1) US9308610B2 (ko)
EP (1) EP2621669B1 (ko)
JP (1) JP5739539B2 (ko)
KR (1) KR20130137172A (ko)
CN (1) CN103140322B (ko)
BR (1) BR112013006640A2 (ko)
CA (1) CA2811915C (ko)
ES (1) ES2509267T3 (ko)
HK (1) HK1185835A1 (ko)
PT (1) PT2621669E (ko)
WO (1) WO2012042546A1 (ko)

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CN107398758B (zh) * 2017-09-07 2023-10-31 歌尔科技有限公司 定位装夹工装
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Also Published As

Publication number Publication date
WO2012042546A8 (en) 2012-05-18
HK1185835A1 (en) 2014-02-28
CA2811915C (en) 2017-07-04
US9308610B2 (en) 2016-04-12
JP5739539B2 (ja) 2015-06-24
PT2621669E (pt) 2014-10-20
US20130175751A1 (en) 2013-07-11
JP2013543449A (ja) 2013-12-05
WO2012042546A1 (en) 2012-04-05
BR112013006640A2 (pt) 2016-06-28
EP2621669A1 (en) 2013-08-07
CN103140322B (zh) 2016-03-30
KR20130137172A (ko) 2013-12-16
ES2509267T3 (es) 2014-10-17
CA2811915A1 (en) 2012-04-05
CN103140322A (zh) 2013-06-05

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